Fluid collection box for phacoemulsification surgery

Abstract

The present disclosure discloses a fluid collection box for phacoemulsification surgery, including a case composed of a front plate, a body, and a rear plate. The case communicates with a waste liquid bag. The body has a perfusion passage and a suction passage that are disposed independently. The perfusion passage is a sealed circulation cavity defined by a cover and the body. The circulation cavity communicates with a first connection port and a second connection port on the body for perfusion. There is a gap between the cover and the body. Connection and disconnection of the perfusion passage is controlled by pressing the cover. The suction passage is a pipeline that communicates a third connection port with the waste liquid bag, and performs perfusion by a peristaltic pump. The suction passage further communicates with a negative pressure regulating loop, to regulate pressure within the suction passage. According to the present disclosure, the perfusion passage and the suction passage are independently disposed, so that the two do not interfere with each other and work independently. Meanwhile, it is ensured that pressure within the perfusion passage is stable, thereby reducing changes of intraocular pressure, and improving safety during use.

1 . A fluid collection box for phacoemulsification surgery, comprising a case composed of a front plate, a body, and a rear plate, wherein the case communicates with a waste liquid bag; the body has a perfusion passage and a suction passage that are disposed independently; the perfusion passage is a sealed circulation cavity defined by a cover and the body; the circulation cavity communicates with a first connection port and a second connection port on the body for perfusion; there is a gap between the cover and the body, and connection and disconnection of the perfusion passage is controlled by pressing the cover; the suction passage is a pipeline that communicates a third connection port with the waste liquid bag, and performs perfusion by a peristaltic pump; and the suction passage further communicates with a negative pressure regulating loop, to regulate pressure within the suction passage. 
     
     
         2 . The fluid collection box for phacoemulsification surgery according to  claim 1 , wherein a back surface of the cover is provided with a protruding rib extending downward along an edge thereof; the body is provided with a recess matching the protruding rib; the protruding rib is in an interference fit with the recess and there is a gap therebetween; a cavity wall of the circulation cavity is defined by the back surface of the cover and a surface of the body; a perfusion outlet and a perfusion inlet of the circulation cavity are both located on the body; the perfusion outlet communicates with the first connection port; and the perfusion inlet communicates with the second connection port. 
     
     
         3 . The fluid collection box for phacoemulsification surgery according to  claim 2 , wherein the cover has an outer convex portion and an elastic portion; the outer convex portion is opposite to the perfusion outlet; the elastic portion is opposite to the perfusion inlet; in a first state, there is a gap between the outer convex portion and the perfusion outlet, to maintain liquid flow within the circulation cavity; in a second state, the outer convex portion is pressed to be closely attached to the perfusion outlet, to block the liquid flow within the circulation cavity; the elastic portion can deform during perfusion; and the elastic portion is provided with a sensor to detect perfusion pressure within the circulation cavity through the generated deformation. 
     
     
         4 . The fluid collection box for phacoemulsification surgery according to  claim 1 , wherein the suction passage comprises a first communication port and a second communication port both on the body; the third connection port communicates with the first communication port; the waste liquid bag communicates with the second communication port; a pump line of the peristaltic pump is connected between the first communication port and the second communication port; the pump line is disposed on a limiting mechanism on the body; the limiting mechanism comprises a limiting groove fixedly disposed on the body and two fixed blocks clamped at the two ends of the limiting groove; each of the fixed blocks is fixedly connected to the pump line; and baffle plates are disposed on the two sides of an extension direction of the pump line. 
     
     
         5 . The fluid collection box for phacoemulsification surgery according to  claim 4 , wherein the suction passage comprises an accommodation cavity disposed on a back surface of the body; the accommodation cavity is a sealed chamber composed of the body, the rear plate, and a sealing ring; a liquid inlet of the accommodation cavity communicates with the second communication port; and the accommodation cavity communicates with the waste liquid bag by communicating members. 
     
     
         6 . The fluid collection box for phacoemulsification surgery according to  claim 5 , wherein a separator is vertically disposed in the accommodation cavity, and the accommodation cavity is divided into a first chamber and a second chamber by the separator; the liquid inlet communicates with the first chamber; a top portion of the separator has a notch; and liquid in the first chamber enters the second chamber through the notch. 
     
     
         7 . The fluid collection box for phacoemulsification surgery according to  claim 6 , wherein the communicating members are two identical connecting pipes that are vertically disposed on an inner side surface of the rear plate; the two connecting pipes are respectively disposed in the first chamber and the second chamber; an input port of the connecting pipe is located at a top portion thereof, and an output port thereof is located at a bottom portion of a side surface, where the connecting pipe and the rear plate connect; and the output port is disposed opposite to and communicates with a through hole on the waste liquid bag. 
     
     
         8 . The fluid collection box for phacoemulsification surgery according to  claim 7 , wherein the negative pressure regulating loop is disposed on the surface of the body, and is composed of a reflux inlet, a reflux outlet, and a sealed passage; the reflux inlet communicates with the second chamber; the reflux outlet communicates with the third connection port; a cavity wall of the sealed passage is defined by a sealing cover and the surface of the body; when the suction passage is detected blocked, the reflux inlet will be opened; and the reflux inlet will be closed when the suction passage is not blocked. 
     
     
         9 . The fluid collection box for phacoemulsification surgery according to  claim 8 , wherein a negative pressure value in the suction passage is measured by a negative-pressure sensor disposed on the surface of the body; the negative-pressure sensor is a sealed cavity composed of a deformable thin metal sheet and the surface of the body; and the sealed cavity respectively communicates with the third connection port and the first communication port. 
     
     
         10 . The fluid collection box for phacoemulsification surgery according to  claim 9 , wherein a back surface of the rear plate is provided with a handheld annular component. 
     
     
         11 . The fluid collection box for phacoemulsification surgery according to  claim 2 , wherein the suction passage comprises a first communication port and a second communication port both on the body; the third connection port communicates with the first communication port; the waste liquid bag communicates with the second communication port; a pump line of the peristaltic pump is connected between the first communication port and the second communication port; the pump line is disposed on a limiting mechanism on the body; the limiting mechanism comprises a limiting groove fixedly disposed on the body and two fixed blocks clamped at the two ends of the limiting groove; each of the fixed blocks is fixedly connected to the pump line; and baffle plates are disposed on the two sides of an extension direction of the pump line. 
     
     
         12 . The fluid collection box for phacoemulsification surgery according to  claim 3 , wherein the suction passage comprises a first communication port and a second communication port both on the body; the third connection port communicates with the first communication port; the waste liquid bag communicates with the second communication port; a pump line of the peristaltic pump is connected between the first communication port and the second communication port; the pump line is disposed on a limiting mechanism on the body; the limiting mechanism comprises a limiting groove fixedly disposed on the body and two fixed blocks clamped at the two ends of the limiting groove; each of the fixed blocks is fixedly connected to the pump line; and baffle plates are disposed on the two sides of an extension direction of the pump line.